Knox, ND Radon Mitigation and Testing

Q: What EPA Radon Zone is Knox in?

Knox is in Benson County, EPA Zone 1.

Q: How much does radon mitigation cost in Knox?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Benson County

EPA Zone 1

Located in Benson County within North Dakota's prairie pothole region, Knox sits on glacial till deposits that can influence subsurface gas movement. Testing data for zip code 58343 remains limited, so homeowners should conduct radon testing to determine their individual exposure levels, particularly important given the state's generally elevated radon potential.

Knox, ND Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Knox, ND Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Knox Radon Facts

Key details about the radon risk profile for Knox and the 58343 zip code area.

EPA Radon Zone

Zone 1 — High Risk

County

Benson County, ND

Zip Code

58343

Predicted Screening Level

> 4.0 pCi/L (Zone 1)

Knox and the 58343 zip code are located in Benson County, which has an EPA assigned Radon Zone of 1. A radon zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Knox, ND

What EPA Radon Zone is Knox in?

Knox and the 58343 zip code are in Benson County, which has an EPA assigned Radon Zone of 1. A zone of 1 predicts an average indoor radon screening level greater than 4 pCi/L.

How much does radon mitigation cost in Knox?

Radon mitigation in Knox typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Knox?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in North Dakota

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Grand Forks	13.50 pCi/L	8
Grafton	7.67 pCi/L	3
Dickinson	6.00 pCi/L	3
Watford City	5.50 pCi/L	2
Bismarck	No submissions	0